KTOR-9496 Docs for JavScript ES module support

[vnikolova]

Add a what's new entry for the following issues:

KTOR-9350 JS: Make ES2015 the default target for tests
KTOR-7659 Make ktor-network compatible with ES modules for nodejs

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Walkthrough

This PR updates Ktor's digest authentication implementation to RFC 7616 compliance, reworking the example code to use plaintext passwords with dynamic multi-algorithm digest computation, extending the digestProvider to accept an algorithm parameter, and adding comprehensive documentation covering algorithm configuration, Quality of Protection settings, userhash support, and custom authentication provider implementation with coroutine support.

Changes

Cohort / File(s)	Summary
Digest Auth Implementation codeSnippets/snippets/auth-digest/src/main/kotlin/authdigest/Application.kt	Replaced MD5 precomputed user table with plaintext userPasswords map; removed getMd5Digest() helper and added computeHash() function to dynamically compute digests based on DigestAlgorithm parameter; refactored digestProvider to accept algorithm parameter, configure supported algorithms (SHA_512_256 and MD5), and return null for unknown users.
Documentation topics/whats-new-350.md, topics/server-digest-auth.md, topics/server-auth.md	Added RFC 7616 digest authentication documentation covering multi-algorithm configuration, QoP (auth and auth-int) handling, userhash support, algorithm-specific response computation, and security best practices; added documentation for custom authentication providers with coroutine support via DynamicProviderConfig.
Manifest ktor.tree	Added table-of-contents entry linking to whats-new-350.md under the Releases section.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~22 minutes

Possibly related PRs

• KTOR-9336 Digest Auth Docs. Document RFC 7616 #768: Directly related to the digest auth implementation changes, modifying the same Application.kt file with plaintext password storage and algorithm-based digest computation.

Suggested reviewers

• osipxd
• Stexxe
• bjhham

🚥 Pre-merge checks | ✅ 2 | ❌ 3

❌ Failed checks (2 warnings, 1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	⚠️ Warning	The title mentions JavaScript ES module support but the changeset includes extensive digest authentication documentation updates as the primary change.	Update the title to reflect the main changes: consider 'Add Ktor 3.5.0 release notes with digest auth updates and ES module support' to accurately represent the substantial digest authentication documentation additions.
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	❓ Inconclusive	The description references two JavaScript/ES module issues but omits the substantial digest authentication documentation work that comprises a majority of the changes.	Clarify whether ES module support is the primary focus or if digest authentication documentation should be equally highlighted in the description.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Commit unit tests in branch vnikolova/KTOR-9496

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[osipxd]

I'm sorry for not providing a proper description for the issues. I think we can omit details and write something like this instead of two sub-sections:

We've fixed problems making it impossible to use ktor-network and all dependent modules with ES modules enabled. We've also updated our test infrastructure to target ES2015 and ES modules to prevent possible regressions.

These links might be helpful:

• https://kotlinlang.org/docs/js-project-setup.html#support-for-es2015-features
• https://kotlinlang.org/docs/js-modules.html

[vnikolova]

Thanks, updated the section now.

[osipxd]

👍